/*
- * Copyright (c) 2008, 2009, 2010 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
+#include "classifier.h"
+#include "compiler.h"
#include "flow.h"
+#include "netdev.h"
+#include "openflow/nicira-ext.h"
+#include "openvswitch/types.h"
+struct cls_rule;
struct ofpbuf;
-struct ofp_action_header;
+
+/* Basic decoding and length validation of OpenFlow messages. */
+enum ofputil_msg_code {
+ OFPUTIL_MSG_INVALID,
+
+ /* OFPT_* messages. */
+ OFPUTIL_OFPT_HELLO,
+ OFPUTIL_OFPT_ERROR,
+ OFPUTIL_OFPT_ECHO_REQUEST,
+ OFPUTIL_OFPT_ECHO_REPLY,
+ OFPUTIL_OFPT_FEATURES_REQUEST,
+ OFPUTIL_OFPT_FEATURES_REPLY,
+ OFPUTIL_OFPT_GET_CONFIG_REQUEST,
+ OFPUTIL_OFPT_GET_CONFIG_REPLY,
+ OFPUTIL_OFPT_SET_CONFIG,
+ OFPUTIL_OFPT_PACKET_IN,
+ OFPUTIL_OFPT_FLOW_REMOVED,
+ OFPUTIL_OFPT_PORT_STATUS,
+ OFPUTIL_OFPT_PACKET_OUT,
+ OFPUTIL_OFPT_FLOW_MOD,
+ OFPUTIL_OFPT_PORT_MOD,
+ OFPUTIL_OFPT_BARRIER_REQUEST,
+ OFPUTIL_OFPT_BARRIER_REPLY,
+ OFPUTIL_OFPT_QUEUE_GET_CONFIG_REQUEST,
+ OFPUTIL_OFPT_QUEUE_GET_CONFIG_REPLY,
+
+ /* OFPST_* stat requests. */
+ OFPUTIL_OFPST_DESC_REQUEST,
+ OFPUTIL_OFPST_FLOW_REQUEST,
+ OFPUTIL_OFPST_AGGREGATE_REQUEST,
+ OFPUTIL_OFPST_TABLE_REQUEST,
+ OFPUTIL_OFPST_PORT_REQUEST,
+ OFPUTIL_OFPST_QUEUE_REQUEST,
+ OFPUTIL_OFPST_PORT_DESC_REQUEST,
+
+ /* OFPST_* stat replies. */
+ OFPUTIL_OFPST_DESC_REPLY,
+ OFPUTIL_OFPST_FLOW_REPLY,
+ OFPUTIL_OFPST_QUEUE_REPLY,
+ OFPUTIL_OFPST_PORT_REPLY,
+ OFPUTIL_OFPST_TABLE_REPLY,
+ OFPUTIL_OFPST_AGGREGATE_REPLY,
+ OFPUTIL_OFPST_PORT_DESC_REPLY,
+
+ /* NXT_* messages. */
+ OFPUTIL_NXT_ROLE_REQUEST,
+ OFPUTIL_NXT_ROLE_REPLY,
+ OFPUTIL_NXT_SET_FLOW_FORMAT,
+ OFPUTIL_NXT_FLOW_MOD_TABLE_ID,
+ OFPUTIL_NXT_FLOW_MOD,
+ OFPUTIL_NXT_FLOW_REMOVED,
+ OFPUTIL_NXT_SET_PACKET_IN_FORMAT,
+ OFPUTIL_NXT_PACKET_IN,
+ OFPUTIL_NXT_FLOW_AGE,
+ OFPUTIL_NXT_SET_ASYNC_CONFIG,
+ OFPUTIL_NXT_SET_CONTROLLER_ID,
+
+ /* NXST_* stat requests. */
+ OFPUTIL_NXST_FLOW_REQUEST,
+ OFPUTIL_NXST_AGGREGATE_REQUEST,
+
+ /* NXST_* stat replies. */
+ OFPUTIL_NXST_FLOW_REPLY,
+ OFPUTIL_NXST_AGGREGATE_REPLY
+};
+
+struct ofputil_msg_type;
+enum ofperr ofputil_decode_msg_type(const struct ofp_header *,
+ const struct ofputil_msg_type **);
+enum ofperr ofputil_decode_msg_type_partial(const struct ofp_header *,
+ size_t length,
+ const struct ofputil_msg_type **);
+enum ofputil_msg_code ofputil_msg_type_code(const struct ofputil_msg_type *);
+const char *ofputil_msg_type_name(const struct ofputil_msg_type *);
+
+/* Port numbers. */
+enum ofperr ofputil_port_from_ofp11(ovs_be32 ofp11_port, uint16_t *ofp10_port);
+ovs_be32 ofputil_port_to_ofp11(uint16_t ofp10_port);
+
+enum ofperr ofputil_check_output_port(uint16_t ofp_port, int max_ports);
+bool ofputil_port_from_string(const char *, uint16_t *port);
+void ofputil_format_port(uint16_t port, struct ds *);
+
+/* Converting OFPFW10_NW_SRC_MASK and OFPFW10_NW_DST_MASK wildcard bit counts
+ * to and from IP bitmasks. */
+ovs_be32 ofputil_wcbits_to_netmask(int wcbits);
+int ofputil_netmask_to_wcbits(ovs_be32 netmask);
+
+/* Protocols.
+ *
+ * These are arranged from most portable to least portable, or alternatively
+ * from least powerful to most powerful. Formats earlier on the list are more
+ * likely to be understood for the purpose of making requests, but formats
+ * later on the list are more likely to accurately describe a flow within a
+ * switch.
+ *
+ * On any given OpenFlow connection, a single protocol is in effect at any
+ * given time. These values use separate bits only because that makes it easy
+ * to test whether a particular protocol is within a given set of protocols and
+ * to implement set union and intersection.
+ */
+enum ofputil_protocol {
+ /* OpenFlow 1.0-based protocols. */
+ OFPUTIL_P_OF10 = 1 << 0, /* OpenFlow 1.0 flow format. */
+ OFPUTIL_P_OF10_TID = 1 << 1, /* OF1.0 + flow_mod_table_id extension. */
+#define OFPUTIL_P_OF10_ANY (OFPUTIL_P_OF10 | OFPUTIL_P_OF10_TID)
+
+ /* OpenFlow 1.0 with NXM-based flow formats. */
+ OFPUTIL_P_NXM = 1 << 2, /* Nicira extended match. */
+ OFPUTIL_P_NXM_TID = 1 << 3, /* NXM + flow_mod_table_id extension. */
+#define OFPUTIL_P_NXM_ANY (OFPUTIL_P_NXM | OFPUTIL_P_NXM_TID)
+
+ /* All protocols. */
+#define OFPUTIL_P_ANY (OFPUTIL_P_OF10_ANY | OFPUTIL_P_NXM_ANY)
+
+ /* Protocols in which a specific table may be specified in flow_mods. */
+#define OFPUTIL_P_TID (OFPUTIL_P_OF10_TID | OFPUTIL_P_NXM_TID)
+};
+
+/* Protocols to use for flow dumps, from most to least preferred. */
+extern enum ofputil_protocol ofputil_flow_dump_protocols[];
+extern size_t ofputil_n_flow_dump_protocols;
+
+enum ofputil_protocol ofputil_protocol_from_ofp_version(int version);
+uint8_t ofputil_protocol_to_ofp_version(enum ofputil_protocol);
+
+bool ofputil_protocol_is_valid(enum ofputil_protocol);
+enum ofputil_protocol ofputil_protocol_set_tid(enum ofputil_protocol,
+ bool enable);
+enum ofputil_protocol ofputil_protocol_to_base(enum ofputil_protocol);
+enum ofputil_protocol ofputil_protocol_set_base(
+ enum ofputil_protocol cur, enum ofputil_protocol new_base);
+
+const char *ofputil_protocol_to_string(enum ofputil_protocol);
+char *ofputil_protocols_to_string(enum ofputil_protocol);
+enum ofputil_protocol ofputil_protocols_from_string(const char *);
+enum ofputil_protocol ofputil_usable_protocols(const struct cls_rule *);
+
+struct ofpbuf *ofputil_encode_set_protocol(enum ofputil_protocol current,
+ enum ofputil_protocol want,
+ enum ofputil_protocol *next);
+
+/* nx_flow_format */
+struct ofpbuf *ofputil_encode_nx_set_flow_format(enum nx_flow_format);
+enum ofputil_protocol ofputil_nx_flow_format_to_protocol(enum nx_flow_format);
+bool ofputil_nx_flow_format_is_valid(enum nx_flow_format);
+const char *ofputil_nx_flow_format_to_string(enum nx_flow_format);
+
+/* Work with ofp10_match. */
+void ofputil_wildcard_from_ofpfw10(uint32_t ofpfw, struct flow_wildcards *);
+void ofputil_cls_rule_from_ofp10_match(const struct ofp10_match *,
+ unsigned int priority,
+ struct cls_rule *);
+void ofputil_normalize_rule(struct cls_rule *);
+void ofputil_cls_rule_to_ofp10_match(const struct cls_rule *,
+ struct ofp10_match *);
+
+/* Work with ofp11_match. */
+enum ofperr ofputil_cls_rule_from_ofp11_match(const struct ofp11_match *,
+ unsigned int priority,
+ struct cls_rule *);
+void ofputil_cls_rule_to_ofp11_match(const struct cls_rule *,
+ struct ofp11_match *);
+
+/* dl_type translation between OpenFlow and 'struct flow' format. */
+ovs_be16 ofputil_dl_type_to_openflow(ovs_be16 flow_dl_type);
+ovs_be16 ofputil_dl_type_from_openflow(ovs_be16 ofp_dl_type);
+
+/* PACKET_IN. */
+bool ofputil_packet_in_format_is_valid(enum nx_packet_in_format);
+int ofputil_packet_in_format_from_string(const char *);
+const char *ofputil_packet_in_format_to_string(enum nx_packet_in_format);
+struct ofpbuf *ofputil_make_set_packet_in_format(enum nx_packet_in_format);
+
+/* NXT_FLOW_MOD_TABLE_ID extension. */
+struct ofpbuf *ofputil_make_flow_mod_table_id(bool flow_mod_table_id);
+
+/* Protocol-independent flow_mod.
+ *
+ * The handling of cookies across multiple versions of OpenFlow is a bit
+ * confusing. A full description of Open vSwitch's cookie handling is
+ * in the DESIGN file. The following table shows the expected values of
+ * the cookie-related fields for the different flow_mod commands in
+ * OpenFlow 1.0 ("OF10") and NXM. "<used>" and "-" indicate a value
+ * that may be populated and an ignored field, respectively.
+ *
+ * cookie cookie_mask new_cookie
+ * ====== =========== ==========
+ * OF10 Add - 0 <used>
+ * OF10 Modify - 0 <used>
+ * OF10 Delete - 0 -
+ * NXM Add - 0 <used>
+ * NXM Modify <used> <used> <used>
+ * NXM Delete <used> <used> -
+ */
+struct ofputil_flow_mod {
+ struct cls_rule cr;
+ ovs_be64 cookie; /* Cookie bits to match. */
+ ovs_be64 cookie_mask; /* 1-bit in each 'cookie' bit to match. */
+ ovs_be64 new_cookie; /* New cookie to install or -1. */
+ uint8_t table_id;
+ uint16_t command;
+ uint16_t idle_timeout;
+ uint16_t hard_timeout;
+ uint32_t buffer_id;
+ uint16_t out_port;
+ uint16_t flags;
+ struct ofpact *ofpacts; /* Series of "struct ofpact"s. */
+ size_t ofpacts_len; /* Length of ofpacts, in bytes. */
+};
+
+enum ofperr ofputil_decode_flow_mod(struct ofputil_flow_mod *,
+ const struct ofp_header *,
+ enum ofputil_protocol,
+ struct ofpbuf *ofpacts);
+struct ofpbuf *ofputil_encode_flow_mod(const struct ofputil_flow_mod *,
+ enum ofputil_protocol);
+
+enum ofputil_protocol ofputil_flow_mod_usable_protocols(
+ const struct ofputil_flow_mod *fms, size_t n_fms);
+
+/* Flow stats or aggregate stats request, independent of protocol. */
+struct ofputil_flow_stats_request {
+ bool aggregate; /* Aggregate results? */
+ struct cls_rule match;
+ ovs_be64 cookie;
+ ovs_be64 cookie_mask;
+ uint16_t out_port;
+ uint8_t table_id;
+};
+
+enum ofperr ofputil_decode_flow_stats_request(
+ struct ofputil_flow_stats_request *, const struct ofp_header *);
+struct ofpbuf *ofputil_encode_flow_stats_request(
+ const struct ofputil_flow_stats_request *, enum ofputil_protocol);
+enum ofputil_protocol ofputil_flow_stats_request_usable_protocols(
+ const struct ofputil_flow_stats_request *);
+
+/* Flow stats reply, independent of protocol. */
+struct ofputil_flow_stats {
+ struct cls_rule rule;
+ ovs_be64 cookie;
+ uint8_t table_id;
+ uint32_t duration_sec;
+ uint32_t duration_nsec;
+ uint16_t idle_timeout;
+ uint16_t hard_timeout;
+ int idle_age; /* Seconds since last packet, -1 if unknown. */
+ int hard_age; /* Seconds since last change, -1 if unknown. */
+ uint64_t packet_count; /* Packet count, UINT64_MAX if unknown. */
+ uint64_t byte_count; /* Byte count, UINT64_MAX if unknown. */
+ struct ofpact *ofpacts;
+ size_t ofpacts_len;
+};
+
+int ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *,
+ struct ofpbuf *msg,
+ bool flow_age_extension,
+ struct ofpbuf *ofpacts);
+void ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *,
+ struct list *replies);
+
+/* Aggregate stats reply, independent of protocol. */
+struct ofputil_aggregate_stats {
+ uint64_t packet_count; /* Packet count, UINT64_MAX if unknown. */
+ uint64_t byte_count; /* Byte count, UINT64_MAX if unknown. */
+ uint32_t flow_count;
+};
+
+struct ofpbuf *ofputil_encode_aggregate_stats_reply(
+ const struct ofputil_aggregate_stats *stats,
+ const struct ofp_stats_msg *request);
+
+/* Flow removed message, independent of protocol. */
+struct ofputil_flow_removed {
+ struct cls_rule rule;
+ ovs_be64 cookie;
+ uint8_t reason; /* One of OFPRR_*. */
+ uint32_t duration_sec;
+ uint32_t duration_nsec;
+ uint16_t idle_timeout;
+ uint64_t packet_count; /* Packet count, UINT64_MAX if unknown. */
+ uint64_t byte_count; /* Byte count, UINT64_MAX if unknown. */
+};
+
+enum ofperr ofputil_decode_flow_removed(struct ofputil_flow_removed *,
+ const struct ofp_header *);
+struct ofpbuf *ofputil_encode_flow_removed(const struct ofputil_flow_removed *,
+ enum ofputil_protocol);
+
+/* Abstract packet-in message. */
+struct ofputil_packet_in {
+ const void *packet;
+ size_t packet_len;
+
+ enum ofp_packet_in_reason reason; /* One of OFPR_*. */
+ uint16_t controller_id; /* Controller ID to send to. */
+ uint8_t table_id;
+ ovs_be64 cookie;
+
+ uint32_t buffer_id;
+ int send_len;
+ uint16_t total_len; /* Full length of frame. */
+
+ struct flow_metadata fmd; /* Metadata at creation time. */
+};
+
+enum ofperr ofputil_decode_packet_in(struct ofputil_packet_in *,
+ const struct ofp_header *);
+struct ofpbuf *ofputil_encode_packet_in(const struct ofputil_packet_in *,
+ enum nx_packet_in_format);
+
+const char *ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason);
+bool ofputil_packet_in_reason_from_string(const char *,
+ enum ofp_packet_in_reason *);
+
+/* Abstract packet-out message.
+ *
+ * ofputil_decode_packet_out() will ensure that 'in_port' is a physical port
+ * (OFPP_MAX or less) or one of OFPP_LOCAL, OFPP_NONE, or OFPP_CONTROLLER. */
+struct ofputil_packet_out {
+ const void *packet; /* Packet data, if buffer_id == UINT32_MAX. */
+ size_t packet_len; /* Length of packet data in bytes. */
+ uint32_t buffer_id; /* Buffer id or UINT32_MAX if no buffer. */
+ uint16_t in_port; /* Packet's input port. */
+ struct ofpact *ofpacts; /* Actions. */
+ size_t ofpacts_len; /* Size of ofpacts in bytes. */
+};
+
+enum ofperr ofputil_decode_packet_out(struct ofputil_packet_out *,
+ const struct ofp_packet_out *,
+ struct ofpbuf *ofpacts);
+struct ofpbuf *ofputil_encode_packet_out(const struct ofputil_packet_out *);
+
+enum ofputil_port_config {
+ /* OpenFlow 1.0 and 1.1 share these values for these port config bits. */
+ OFPUTIL_PC_PORT_DOWN = 1 << 0, /* Port is administratively down. */
+ OFPUTIL_PC_NO_RECV = 1 << 2, /* Drop all packets received by port. */
+ OFPUTIL_PC_NO_FWD = 1 << 5, /* Drop packets forwarded to port. */
+ OFPUTIL_PC_NO_PACKET_IN = 1 << 6, /* No send packet-in msgs for port. */
+ /* OpenFlow 1.0 only. */
+ OFPUTIL_PC_NO_STP = 1 << 1, /* No 802.1D spanning tree for port. */
+ OFPUTIL_PC_NO_RECV_STP = 1 << 3, /* Drop received 802.1D STP packets. */
+ OFPUTIL_PC_NO_FLOOD = 1 << 4, /* Do not include port when flooding. */
+ /* There are no OpenFlow 1.1-only bits. */
+};
+
+enum ofputil_port_state {
+ /* OpenFlow 1.0 and 1.1 share this values for these port state bits. */
+ OFPUTIL_PS_LINK_DOWN = 1 << 0, /* No physical link present. */
+ /* OpenFlow 1.1 only. */
+ OFPUTIL_PS_BLOCKED = 1 << 1, /* Port is blocked */
+ OFPUTIL_PS_LIVE = 1 << 2, /* Live for Fast Failover Group. */
+ /* OpenFlow 1.0 only. */
+ OFPUTIL_PS_STP_LISTEN = 0 << 8, /* Not learning or relaying frames. */
+ OFPUTIL_PS_STP_LEARN = 1 << 8, /* Learning but not relaying frames. */
+ OFPUTIL_PS_STP_FORWARD = 2 << 8, /* Learning and relaying frames. */
+ OFPUTIL_PS_STP_BLOCK = 3 << 8, /* Not part of spanning tree. */
+ OFPUTIL_PS_STP_MASK = 3 << 8 /* Bit mask for OFPPS10_STP_* values. */
+};
+
+/* Abstract ofp10_phy_port or ofp11_port. */
+struct ofputil_phy_port {
+ uint16_t port_no;
+ uint8_t hw_addr[OFP_ETH_ALEN];
+ char name[OFP_MAX_PORT_NAME_LEN];
+ enum ofputil_port_config config;
+ enum ofputil_port_state state;
+
+ /* NETDEV_F_* feature bitmasks. */
+ enum netdev_features curr; /* Current features. */
+ enum netdev_features advertised; /* Features advertised by the port. */
+ enum netdev_features supported; /* Features supported by the port. */
+ enum netdev_features peer; /* Features advertised by peer. */
+
+ /* Speed. */
+ uint32_t curr_speed; /* Current speed, in kbps. */
+ uint32_t max_speed; /* Maximum supported speed, in kbps. */
+};
+
+enum ofputil_capabilities {
+ /* OpenFlow 1.0 and 1.1 share these values for these capabilities. */
+ OFPUTIL_C_FLOW_STATS = 1 << 0, /* Flow statistics. */
+ OFPUTIL_C_TABLE_STATS = 1 << 1, /* Table statistics. */
+ OFPUTIL_C_PORT_STATS = 1 << 2, /* Port statistics. */
+ OFPUTIL_C_IP_REASM = 1 << 5, /* Can reassemble IP fragments. */
+ OFPUTIL_C_QUEUE_STATS = 1 << 6, /* Queue statistics. */
+ OFPUTIL_C_ARP_MATCH_IP = 1 << 7, /* Match IP addresses in ARP pkts. */
+
+ /* OpenFlow 1.0 only. */
+ OFPUTIL_C_STP = 1 << 3, /* 802.1d spanning tree. */
+
+ /* OpenFlow 1.1 only. */
+ OFPUTIL_C_GROUP_STATS = 1 << 4, /* Group statistics. */
+};
+
+enum ofputil_action_bitmap {
+ OFPUTIL_A_OUTPUT = 1 << 0,
+ OFPUTIL_A_SET_VLAN_VID = 1 << 1,
+ OFPUTIL_A_SET_VLAN_PCP = 1 << 2,
+ OFPUTIL_A_STRIP_VLAN = 1 << 3,
+ OFPUTIL_A_SET_DL_SRC = 1 << 4,
+ OFPUTIL_A_SET_DL_DST = 1 << 5,
+ OFPUTIL_A_SET_NW_SRC = 1 << 6,
+ OFPUTIL_A_SET_NW_DST = 1 << 7,
+ OFPUTIL_A_SET_NW_ECN = 1 << 8,
+ OFPUTIL_A_SET_NW_TOS = 1 << 9,
+ OFPUTIL_A_SET_TP_SRC = 1 << 10,
+ OFPUTIL_A_SET_TP_DST = 1 << 11,
+ OFPUTIL_A_ENQUEUE = 1 << 12,
+ OFPUTIL_A_COPY_TTL_OUT = 1 << 13,
+ OFPUTIL_A_COPY_TTL_IN = 1 << 14,
+ OFPUTIL_A_SET_MPLS_LABEL = 1 << 15,
+ OFPUTIL_A_SET_MPLS_TC = 1 << 16,
+ OFPUTIL_A_SET_MPLS_TTL = 1 << 17,
+ OFPUTIL_A_DEC_MPLS_TTL = 1 << 18,
+ OFPUTIL_A_PUSH_VLAN = 1 << 19,
+ OFPUTIL_A_POP_VLAN = 1 << 20,
+ OFPUTIL_A_PUSH_MPLS = 1 << 21,
+ OFPUTIL_A_POP_MPLS = 1 << 22,
+ OFPUTIL_A_SET_QUEUE = 1 << 23,
+ OFPUTIL_A_GROUP = 1 << 24,
+ OFPUTIL_A_SET_NW_TTL = 1 << 25,
+ OFPUTIL_A_DEC_NW_TTL = 1 << 26,
+};
+
+/* Abstract ofp_switch_features. */
+struct ofputil_switch_features {
+ uint64_t datapath_id; /* Datapath unique ID. */
+ uint32_t n_buffers; /* Max packets buffered at once. */
+ uint8_t n_tables; /* Number of tables supported by datapath. */
+ enum ofputil_capabilities capabilities;
+ enum ofputil_action_bitmap actions;
+};
+
+enum ofperr ofputil_decode_switch_features(const struct ofp_switch_features *,
+ struct ofputil_switch_features *,
+ struct ofpbuf *);
+
+struct ofpbuf *ofputil_encode_switch_features(
+ const struct ofputil_switch_features *, enum ofputil_protocol,
+ ovs_be32 xid);
+void ofputil_put_switch_features_port(const struct ofputil_phy_port *,
+ struct ofpbuf *);
+bool ofputil_switch_features_ports_trunc(struct ofpbuf *b);
+
+/* phy_port helper functions. */
+int ofputil_pull_phy_port(uint8_t ofp_version, struct ofpbuf *,
+ struct ofputil_phy_port *);
+size_t ofputil_count_phy_ports(uint8_t ofp_version, struct ofpbuf *);
+
+/* Abstract ofp_port_status. */
+struct ofputil_port_status {
+ enum ofp_port_reason reason;
+ struct ofputil_phy_port desc;
+};
+
+enum ofperr ofputil_decode_port_status(const struct ofp_port_status *,
+ struct ofputil_port_status *);
+struct ofpbuf *ofputil_encode_port_status(const struct ofputil_port_status *,
+ enum ofputil_protocol);
+
+/* Abstract ofp_port_mod. */
+struct ofputil_port_mod {
+ uint16_t port_no;
+ uint8_t hw_addr[OFP_ETH_ALEN];
+ enum ofputil_port_config config;
+ enum ofputil_port_config mask;
+ enum netdev_features advertise;
+};
+
+enum ofperr ofputil_decode_port_mod(const struct ofp_header *,
+ struct ofputil_port_mod *);
+struct ofpbuf *ofputil_encode_port_mod(const struct ofputil_port_mod *,
+ enum ofputil_protocol);
/* OpenFlow protocol utility functions. */
void *make_openflow(size_t openflow_len, uint8_t type, struct ofpbuf **);
+void *make_nxmsg(size_t openflow_len, uint32_t subtype, struct ofpbuf **);
+
void *make_openflow_xid(size_t openflow_len, uint8_t type,
- uint32_t xid, struct ofpbuf **);
+ ovs_be32 xid, struct ofpbuf **);
+void *make_nxmsg_xid(size_t openflow_len, uint32_t subtype, ovs_be32 xid,
+ struct ofpbuf **);
+
void *put_openflow(size_t openflow_len, uint8_t type, struct ofpbuf *);
-void *put_openflow_xid(size_t openflow_len, uint8_t type, uint32_t xid,
+void *put_openflow_xid(size_t openflow_len, uint8_t type, ovs_be32 xid,
struct ofpbuf *);
+
+void *put_nxmsg(size_t openflow_len, uint32_t subtype, struct ofpbuf *);
+void *put_nxmsg_xid(size_t openflow_len, uint32_t subtype, ovs_be32 xid,
+ struct ofpbuf *);
+
void update_openflow_length(struct ofpbuf *);
-struct ofpbuf *make_flow_mod(uint16_t command, const struct flow *,
- size_t actions_len);
-struct ofpbuf *make_add_flow(const struct flow *, uint32_t buffer_id,
- uint16_t max_idle, size_t actions_len);
-struct ofpbuf *make_del_flow(const struct flow *);
-struct ofpbuf *make_add_simple_flow(const struct flow *,
- uint32_t buffer_id, uint16_t out_port,
- uint16_t max_idle);
-struct ofpbuf *make_packet_in(uint32_t buffer_id, uint16_t in_port,
- uint8_t reason,
- const struct ofpbuf *payload, int max_send_len);
-struct ofpbuf *make_packet_out(const struct ofpbuf *packet, uint32_t buffer_id,
- uint16_t in_port,
- const struct ofp_action_header *,
- size_t n_actions);
-struct ofpbuf *make_buffered_packet_out(uint32_t buffer_id,
- uint16_t in_port, uint16_t out_port);
-struct ofpbuf *make_unbuffered_packet_out(const struct ofpbuf *packet,
- uint16_t in_port, uint16_t out_port);
+
+void *ofputil_make_stats_request(size_t openflow_len, uint16_t type,
+ uint32_t subtype, struct ofpbuf **);
+void *ofputil_make_stats_reply(size_t openflow_len,
+ const struct ofp_stats_msg *request,
+ struct ofpbuf **);
+
+void ofputil_start_stats_reply(const struct ofp_stats_msg *request,
+ struct list *);
+struct ofpbuf *ofputil_reserve_stats_reply(size_t len, struct list *);
+void *ofputil_append_stats_reply(size_t len, struct list *);
+void ofputil_postappend_stats_reply(size_t start_ofs, struct list *);
+
+void ofputil_append_port_desc_stats_reply(uint8_t ofp_version,
+ const struct ofputil_phy_port *pp,
+ struct list *replies);
+
+const void *ofputil_stats_body(const struct ofp_header *);
+size_t ofputil_stats_body_len(const struct ofp_header *);
+
+const void *ofputil_nxstats_body(const struct ofp_header *);
+size_t ofputil_nxstats_body_len(const struct ofp_header *);
+
+/* */
struct ofpbuf *make_echo_request(void);
struct ofpbuf *make_echo_reply(const struct ofp_header *rq);
-int check_ofp_message(const struct ofp_header *, uint8_t type, size_t size);
-int check_ofp_message_array(const struct ofp_header *, uint8_t type,
- size_t size, size_t array_elt_size,
- size_t *n_array_elts);
-int check_ofp_packet_out(const struct ofp_header *, struct ofpbuf *data,
- int *n_actions, int max_ports);
-
-struct flow_stats_iterator {
- const uint8_t *pos, *end;
-};
-const struct ofp_flow_stats *flow_stats_first(struct flow_stats_iterator *,
- const struct ofp_stats_reply *);
-const struct ofp_flow_stats *flow_stats_next(struct flow_stats_iterator *);
-
-struct actions_iterator {
- const union ofp_action *pos, *end;
-};
-const union ofp_action *actions_first(struct actions_iterator *,
- const union ofp_action *,
- size_t n_actions);
-const union ofp_action *actions_next(struct actions_iterator *);
-int validate_actions(const union ofp_action *, size_t n_actions,
- int max_ports);
-bool action_outputs_to_port(const union ofp_action *, uint16_t port);
-
-void normalize_match(struct ofp_match *);
-char *ofp_match_to_literal_string(const struct ofp_match *match);
-\f
-/* OpenFlow vendors.
- *
- * These functions map OpenFlow 32-bit vendor IDs (as used in struct
- * ofp_vendor_header) into 4-bit values to embed in an "int". The 4-bit values
- * are only used internally in Open vSwitch and never appear on the wire, so
- * particular codes used are not important.
- */
-/* Vendor error numbers currently used in Open vSwitch. */
-#define OFPUTIL_VENDORS \
- /* vendor name vendor value */ \
- OFPUTIL_VENDOR(OFPUTIL_VENDOR_OPENFLOW, 0x00000000) \
- OFPUTIL_VENDOR(OFPUTIL_VENDOR_NICIRA, NX_VENDOR_ID)
+struct ofpbuf *ofputil_encode_barrier_request(void);
+
+const char *ofputil_frag_handling_to_string(enum ofp_config_flags);
+bool ofputil_frag_handling_from_string(const char *, enum ofp_config_flags *);
-/* OFPUTIL_VENDOR_* definitions. */
-enum ofputil_vendor_codes {
-#define OFPUTIL_VENDOR(NAME, VENDOR_ID) NAME,
- OFPUTIL_VENDORS
- OFPUTIL_N_VENDORS
-#undef OFPUTIL_VENDOR
-};
\f
-/* Error codes.
- *
- * We embed system errno values and OpenFlow standard and vendor extension
- * error codes into a single 31-bit space using the following encoding.
- * (Bit 31 is unused and assumed 0 to avoid negative "int" values.)
+/* Actions. */
+
+/* The type of an action.
*
- * 30 0
- * +------------------------------------------------------+
- * | 0 | success
- * +------------------------------------------------------+
+ * For each implemented OFPAT10_* and NXAST_* action type, there is a
+ * corresponding constant prefixed with OFPUTIL_, e.g.:
*
- * 30 29 0
- * +--+---------------------------------------------------+
- * | 0| errno value | errno value
- * +--+---------------------------------------------------+
+ * OFPUTIL_OFPAT10_OUTPUT
+ * OFPUTIL_OFPAT10_SET_VLAN_VID
+ * OFPUTIL_OFPAT10_SET_VLAN_PCP
+ * OFPUTIL_OFPAT10_STRIP_VLAN
+ * OFPUTIL_OFPAT10_SET_DL_SRC
+ * OFPUTIL_OFPAT10_SET_DL_DST
+ * OFPUTIL_OFPAT10_SET_NW_SRC
+ * OFPUTIL_OFPAT10_SET_NW_DST
+ * OFPUTIL_OFPAT10_SET_NW_TOS
+ * OFPUTIL_OFPAT10_SET_TP_SRC
+ * OFPUTIL_OFPAT10_SET_TP_DST
+ * OFPUTIL_OFPAT10_ENQUEUE
+ * OFPUTIL_NXAST_RESUBMIT
+ * OFPUTIL_NXAST_SET_TUNNEL
+ * OFPUTIL_NXAST_SET_QUEUE
+ * OFPUTIL_NXAST_POP_QUEUE
+ * OFPUTIL_NXAST_REG_MOVE
+ * OFPUTIL_NXAST_REG_LOAD
+ * OFPUTIL_NXAST_NOTE
+ * OFPUTIL_NXAST_SET_TUNNEL64
+ * OFPUTIL_NXAST_MULTIPATH
+ * OFPUTIL_NXAST_AUTOPATH
+ * OFPUTIL_NXAST_BUNDLE
+ * OFPUTIL_NXAST_BUNDLE_LOAD
+ * OFPUTIL_NXAST_RESUBMIT_TABLE
+ * OFPUTIL_NXAST_OUTPUT_REG
+ * OFPUTIL_NXAST_LEARN
+ * OFPUTIL_NXAST_DEC_TTL
+ * OFPUTIL_NXAST_FIN_TIMEOUT
*
- * 30 29 26 25 16 15 0
- * +--+-------+----------------+--------------------------+
- * | 1| 0 | type | code | standard OpenFlow
- * +--+-------+----------------+--------------------------+ error
+ * (The above list helps developers who want to "grep" for these definitions.)
+ */
+enum OVS_PACKED_ENUM ofputil_action_code {
+ OFPUTIL_ACTION_INVALID,
+#define OFPAT10_ACTION(ENUM, STRUCT, NAME) OFPUTIL_##ENUM,
+#define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) OFPUTIL_##ENUM,
+#include "ofp-util.def"
+};
+
+/* The number of values of "enum ofputil_action_code". */
+enum {
+#define OFPAT10_ACTION(ENUM, STRUCT, NAME) + 1
+#define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) + 1
+ OFPUTIL_N_ACTIONS = 1
+#include "ofp-util.def"
+};
+
+int ofputil_action_code_from_name(const char *);
+
+void *ofputil_put_action(enum ofputil_action_code, struct ofpbuf *buf);
+
+/* For each OpenFlow action <ENUM> that has a corresponding action structure
+ * struct <STRUCT>, this defines two functions:
*
- * 30 29 26 25 16 15 0
- * +--+-------+----------------+--------------------------+ Nicira
- * | 1| vendor| type | code | NXET_VENDOR
- * +--+-------+----------------+--------------------------+ error extension
+ * void ofputil_init_<ENUM>(struct <STRUCT> *action);
*
- * C and POSIX say that errno values are positive. We assume that they are
- * less than 2**29. They are actually less than 65536 on at least Linux,
- * FreeBSD, OpenBSD, and Windows.
+ * Initializes the parts of 'action' that identify it as having type <ENUM>
+ * and length 'sizeof *action' and zeros the rest. For actions that have
+ * variable length, the length used and cleared is that of struct <STRUCT>.
*
- * The 'vendor' field holds one of the OFPUTIL_VENDOR_* codes defined above.
- * It must be nonzero.
+ * struct <STRUCT> *ofputil_put_<ENUM>(struct ofpbuf *buf);
*
- * Negative values are not defined.
+ * Appends a new 'action', of length 'sizeof(struct <STRUCT>)', to 'buf',
+ * initializes it with ofputil_init_<ENUM>(), and returns it.
*/
+#define OFPAT10_ACTION(ENUM, STRUCT, NAME) \
+ void ofputil_init_##ENUM(struct STRUCT *); \
+ struct STRUCT *ofputil_put_##ENUM(struct ofpbuf *);
+#define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
+ void ofputil_init_##ENUM(struct STRUCT *); \
+ struct STRUCT *ofputil_put_##ENUM(struct ofpbuf *);
+#include "ofp-util.def"
+
+#define OFP_ACTION_ALIGN 8 /* Alignment of ofp_actions. */
+
+enum ofperr validate_actions(const union ofp_action *, size_t n_actions,
+ const struct flow *, int max_ports);
+bool action_outputs_to_port(const union ofp_action *, ovs_be16 port);
+
+enum ofperr ofputil_pull_actions(struct ofpbuf *, unsigned int actions_len,
+ union ofp_action **, size_t *);
+
+bool ofputil_actions_equal(const union ofp_action *a, size_t n_a,
+ const union ofp_action *b, size_t n_b);
+union ofp_action *ofputil_actions_clone(const union ofp_action *, size_t n);
-/* Currently 4 bits are allocated to the "vendor" field. Make sure that all
- * the vendor codes can fit. */
-BUILD_ASSERT_DECL(OFPUTIL_N_VENDORS <= 16);
-
-/* Returns the standard OpenFlow error with the specified 'type' and 'code' as
- * an integer. */
-static inline int
-ofp_mkerr(uint16_t type, uint16_t code)
-{
- return (1 << 30) | (type << 16) | code;
-}
-
-/* Returns the OpenFlow vendor error with the specified 'vendor', 'type', and
- * 'code' as an integer. 'vendor' must be an OFPUTIL_VENDOR_* constant. */
-static inline int
-ofp_mkerr_vendor(uint8_t vendor, uint16_t type, uint16_t code)
-{
- assert(vendor < OFPUTIL_N_VENDORS);
- return (1 << 30) | (vendor << 26) | (type << 16) | code;
-}
-
-/* Returns the OpenFlow vendor error with Nicira as vendor, with the specific
- * 'type' and 'code', as an integer. */
-static inline int
-ofp_mkerr_nicira(uint16_t type, uint16_t code)
-{
- return ofp_mkerr_vendor(OFPUTIL_VENDOR_NICIRA, type, code);
-}
-
-/* Returns true if 'error' encodes an OpenFlow standard or vendor extension
- * error codes as documented above. */
-static inline bool
-is_ofp_error(int error)
-{
- return (error & (1 << 30)) != 0;
-}
-
-/* Returns true if 'error' appears to be a system errno value. */
-static inline bool
-is_errno(int error)
-{
- return !is_ofp_error(error);
-}
-
-/* Returns the "vendor" part of the OpenFlow error code 'error' (which must be
- * in the format explained above). This is normally one of the
- * OFPUTIL_VENDOR_* constants. Returns OFPUTIL_VENDOR_OPENFLOW (0) for a
- * standard OpenFlow error. */
-static inline uint8_t
-get_ofp_err_vendor(int error)
-{
- return (error >> 26) & 0xf;
-}
-
-/* Returns the "type" part of the OpenFlow error code 'error' (which must be in
- * the format explained above). */
-static inline uint16_t
-get_ofp_err_type(int error)
-{
- return (error >> 16) & 0x3ff;
-}
-
-/* Returns the "code" part of the OpenFlow error code 'error' (which must be in
- * the format explained above). */
-static inline uint16_t
-get_ofp_err_code(int error)
-{
- return error & 0xffff;
-}
-
-struct ofpbuf *make_ofp_error_msg(int error, const struct ofp_header *);
+/* Handy utility for parsing flows and actions. */
+bool ofputil_parse_key_value(char **stringp, char **keyp, char **valuep);
#endif /* ofp-util.h */
projects / cascardo / ovs.git / blobdiff